STEADY-STATE THRUST AUGMENTORS AND JET PUMPS

Abstract

The state of the art in steady-state augmentors and jet pumps is briefly reviewed and a general performance theory developed. Generalized charts are presented giving the augmentation ratio obtainable from an optimized eductor, together with the associated geometrical and fluid-dynamic parameters. This theory is shown to give good agreement with experiment. Experimental measurements made by various investigators in the past do not achieve the predicted optimum performance, however, because of various deviations from optimum design in their test eductors. The performance of eductors in an axial stream and the total head rise obtainable through an eductor are both investigated theoretically. The report concludes with a brief survey of various unconventional eductors, including multistage units, Coanda eductors and crypto- steady flow devices.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1966
Accession Number
AD0632126

Entities

People

  • Peter R. Payne

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Boundary Layer
  • Boundary Layer Control
  • Computational Fluid Dynamics
  • Contracts
  • Energy
  • Energy Transfer
  • Fluid Dynamics
  • Fluid Flow
  • Free Stream
  • Hydrodynamics
  • Jet Engines
  • Jet Flaps
  • Mechanical Engineering
  • Pressure Distribution
  • Steady Flow
  • Steady State
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Combustion and Flow Dynamics.
  • Systems Analysis and Design